forked from golang/hotime
92 lines
3.5 KiB
Go
92 lines
3.5 KiB
Go
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package miniprogram
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import (
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"encoding/json"
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"fmt"
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"strings"
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"github.com/silenceper/wechat/util"
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)
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const (
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createWXAQRCodeURL = "https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=%s"
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getWXACodeURL = "https://api.weixin.qq.com/wxa/getwxacode?access_token=%s"
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getWXACodeUnlimitURL = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=%s"
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)
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// QRCoder 小程序码参数
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type QRCoder struct {
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// page 必须是已经发布的小程序存在的页面,根路径前不要填加 /,不能携带参数(参数请放在scene字段里),如果不填写这个字段,默认跳主页面
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Page string `json:"page,omitempty"`
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// path 扫码进入的小程序页面路径
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Path string `json:"path,omitempty"`
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// width 图片宽度
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Width int `json:"width,omitempty"`
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// scene 最大32个可见字符,只支持数字,大小写英文以及部分特殊字符:!#$&'()*+,/:;=?@-._~,其它字符请自行编码为合法字符(因不支持%,中文无法使用 urlencode 处理,请使用其他编码方式)
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Scene string `json:"scene,omitempty"`
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// autoColor 自动配置线条颜色,如果颜色依然是黑色,则说明不建议配置主色调
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AutoColor bool `json:"auto_color,omitempty"`
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// lineColor AutoColor 为 false 时生效,使用 rgb 设置颜色 例如 {"r":"xxx","g":"xxx","b":"xxx"},十进制表示
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LineColor Color `json:"line_color,omitempty"`
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// isHyaline 是否需要透明底色
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IsHyaline bool `json:"is_hyaline,omitempty"`
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}
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// Color QRCode color
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type Color struct {
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R string `json:"r"`
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G string `json:"g"`
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B string `json:"b"`
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}
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// fetchCode 请求并返回二维码二进制数据
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func (wxa *MiniProgram) fetchCode(urlStr string, body interface{}) (response []byte, err error) {
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var accessToken string
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accessToken, err = wxa.GetAccessToken()
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if err != nil {
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return
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}
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urlStr = fmt.Sprintf(urlStr, accessToken)
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var contentType string
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response, contentType, err = util.PostJSONWithRespContentType(urlStr, body)
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if err != nil {
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return
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}
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if strings.HasPrefix(contentType, "application/json") {
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// 返回错误信息
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var result util.CommonError
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err = json.Unmarshal(response, &result)
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if err == nil && result.ErrCode != 0 {
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err = fmt.Errorf("fetchCode error : errcode=%v , errmsg=%v", result.ErrCode, result.ErrMsg)
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return nil, err
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}
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} else if contentType == "image/jpeg" {
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// 返回文件
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return response, nil
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} else {
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err = fmt.Errorf("fetchCode error : unknown response content type - %v", contentType)
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return nil, err
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}
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return
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}
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// CreateWXAQRCode 获取小程序二维码,适用于需要的码数量较少的业务场景
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// 文档地址: https://developers.weixin.qq.com/miniprogram/dev/api/createWXAQRCode.html
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func (wxa *MiniProgram) CreateWXAQRCode(coderParams QRCoder) (response []byte, err error) {
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return wxa.fetchCode(createWXAQRCodeURL, coderParams)
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}
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// GetWXACode 获取小程序码,适用于需要的码数量较少的业务场景
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// 文档地址: https://developers.weixin.qq.com/miniprogram/dev/api/getWXACode.html
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func (wxa *MiniProgram) GetWXACode(coderParams QRCoder) (response []byte, err error) {
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return wxa.fetchCode(getWXACodeURL, coderParams)
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}
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// GetWXACodeUnlimit 获取小程序码,适用于需要的码数量极多的业务场景
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// 文档地址: https://developers.weixin.qq.com/miniprogram/dev/api/getWXACodeUnlimit.html
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func (wxa *MiniProgram) GetWXACodeUnlimit(coderParams QRCoder) (response []byte, err error) {
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return wxa.fetchCode(getWXACodeUnlimitURL, coderParams)
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}
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